Portable case



FIG. 1 is a perspective view of a portable case showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof, the left elevational view being a mirror image thereof; and,

FIG. 4 is a top plan view thereof, the bottom plan view being a mirror image thereof.

The broken lines depicted in FIGS. 1–4 form no part of the claimed design. 

The ornamental design for a portable case, as shown and described. 